Harry Styles: Locking Digits With Mystery Girl

Harry Styles was seen locking hands with a mystery girl this weekend, but never fear Styles' fans ... dude's still single.

The One Direction star was out in London and got snapped with the brunette, but we've learned she's just a friend. In fact, she's his manager's girlfriend.

We're told the two have been friends for a while and Styles' manager was there too ... just out of frame.

You can hear the sigh of relief from Directioners everywhere.